Thinkpads Forum

Posted: **Wed Jan 20, 2016 12:33 pm**

Hi

My notebook Thinkpad T420 (4236-N3G) with WIN7 PRO 64-bit and 8GB RAM goes to sleep and sometimes happens, I cannot wake up using keyboard or mouse.
There is no SSD inside, just a normal Toshiba MK3261GSY hard disk.
The newest BIOS Update is already done and "Power Options" in Windows are on default.
Has anyone similar problem or knows howto solve it?

Posted: **Wed Jan 20, 2016 1:13 pm**

When this happens, can you still wake using power button / Fn key?

Posted: **Wed Jan 20, 2016 1:49 pm**

dr_st wrote:When this happens, can you still wake using power button / Fn key?

No, I cannot.

Posted: **Wed Jan 20, 2016 2:56 pm**

OK, does it get stuck with the little moon LED lit, or is that also off?

Posted: **Wed Jan 20, 2016 3:09 pm**

dr_st wrote:OK, does it get stuck with the little moon LED lit, or is that also off?

If it hangs the LED is still on.

Posted: **Mon Feb 15, 2016 9:56 am**

Sounds like a mobo problem

While my T420 was still on warranty it refused to wake up on standby or even to power up, I would power for a few seconds and then It will die. The ultimate solution was to replace the mobo.

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Sometimes cannot wake up my Thinkpad T420 from sleep mode

Sometimes cannot wake up my Thinkpad T420 from sleep mode

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